2008 NISSAN Sentra MR18DE/QR25DE (B16)
B16 / Sedan / Global (varies by region: North America, Asia, Latin America, etc.)
MR18DEQR25DEHR16DEExact year/trim recordSilver
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- Some MR18DE engines show timing chain tensioner noise with age
- CVT transmission reliability varies by market and maintenance
- Rust can appear in humid climates on older models
First checks
- Verify engine code as it determines specs and parts
- Check timing chain condition on MR18DE engine
- Inspect transmission type and fluid condition
Before replacing parts
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- Engine and transmission choices differ significantly by market
- 2008 model year Sentra is part of B16 generation produced globally with minor regional variations